<template>
	<view>
		<view class="search-box"><uni-search-bar radius="100" @input="input" :focus="true"></uni-search-bar>
		</view>
		<view class="sugg-list" v-if="searchResults.length !==0">
			<view class="sugg-item" v-for="(item, index) in searchResults" :key="index" @click="gotoDetail(item)">
				<view class="goods-name">{{ item.goods_name }}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<!-- /搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="clean"></uni-icons>
			</view>
			<!-- 列表区域 -->
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,i) in histories"  @click="gotoGoodsList(item)" :key="i"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
export default {
	data() {
		return {
			timer:null,
			kw:'',
			//搜索的结果列表
			searchResults:[],
			//搜索历史
			historyList:[]
		};
	},
	onLoad() {
	      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
	    },
	methods: {
		input(e) {
			clearTimeout(this.timer)
			// console.log(e);
			setTimeout(()=>{
				this.kw=e
				this.getSeatchList()
			},1000)
		},
		async getSeatchList(){
			//判断搜索关键词是否为空
			this.kw= this.kw.replace(/\s/gi, '')
			if(this.kw.length===0){
				this.searchResults=[]
				return
			}
			const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw});
			// 3.2 请求失败
			console.log(res);
			if (res.meta.status !== 200) return uni.$showMsg();
			// 3.3 请求成功，为 data 中的数据赋值
			this.searchResults = res.message;
			this.saveSearchHistory()
		},
		gotoDetail(item){
			console.log(item.goods_id);
			uni.navigateTo({
				url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
			})
		},
		saveSearchHistory(){
			// this.historyList.push(this.kw)
			const set=new Set(this.historyList)
			//删除数组重复元素
			set.delete(this.kw)
			//重新添加新的
			set.add(this.kw)
			this.historyList=Array.from(set)
			//对搜索历史数据持久化存储
			 uni.setStorageSync('kw', JSON.stringify(this.historyList))
		},
		clean(){
			this.historyList=[]
			 uni.setStorageSync('kw', '[]')
		},
		gotoGoodsList(item){
			uni.navigateTo({
				url:'/subpkg/goods_list/goods_list?goods_id='+item
			})
		}
	},
	computed:{
		histories(){
			return [...this.historyList].reverse()
		}
	}
};
</script>

<style lang="scss">
.search-box {
	position: sticky;
	top: 0;
	z-index: 999;
	background-color: #c00000;
}
.sugg-list{
	padding:0 15upx;
	.sugg-item{
		display: flex;
		align-items: center;
		justify-content:space-between;
		font-size: 12px;
		padding: 13px 0;
		border-bottom: 1px solid #EfEfEf;
		.goods-name{
			white-space: nowrap;
			overflow: hidden;
			text-overflow: ellipsis;
		}
	}
}
.history-box{
	padding: 0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		height: 40rpx;
		align-items: center;
		font-style: 13px;
		border-bottom: 1px solid #efefef;
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
			background-color: #fefefe;
			color: #111111;
			// box-shadow: 0 0 0;
		}
		
	}
}
</style>
